1 files changed, 62 insertions, 0 deletions
diff --git a/utils/checkpackagelib/lib_patch.py b/utils/checkpackagelib/lib_patch.py
new file mode 100644
index 0000000000..591f13c494
--- /dev/null
+++ b/utils/checkpackagelib/lib_patch.py
@@ -0,0 +1,62 @@
+# See utils/checkpackagelib/readme.txt before editing this file.
+# The format of the patch files is tested during the build, so below check
+# functions don't need to check for things already checked by running
+# "make package-dirclean package-patch".
+
+import re
+
+from base import _CheckFunction
+# Notice: ignore 'imported but unused' from pyflakes for check functions.
+from lib import NewlineAtEof
+
+
+class ApplyOrder(_CheckFunction):
+    APPLY_ORDER = re.compile("/\d{1,4}-[^/]*$")
+
+    def before(self):
+        if not self.APPLY_ORDER.search(self.filename):
+            return ["{}:0: use name <number>-<description>.patch "
+                    "({}#_providing_patches)"
+                    .format(self.filename, self.url_to_manual)]
+
+
+class NumberedSubject(_CheckFunction):
+    NUMBERED_PATCH = re.compile("Subject:\s*\[PATCH\s*\d+/\d+\]")
+
+    def before(self):
+        self.git_patch = False
+        self.lineno = 0
+        self.text = None
+
+    def check_line(self, lineno, text):
+        if text.startswith("diff --git"):
+            self.git_patch = True
+            return
+        if self.NUMBERED_PATCH.search(text):
+            self.lineno = lineno
+            self.text = text
+
+    def after(self):
+        if self.git_patch and self.text:
+            return ["{}:{}: generate your patches with 'git format-patch -N'"
+                    .format(self.filename, self.lineno),
+                    self.text]
+
+
+class Sob(_CheckFunction):
+    SOB_ENTRY = re.compile("^Signed-off-by: .*$")
+
+    def before(self):
+        self.found = False
+
+    def check_line(self, lineno, text):
+        if self.found:
+            return
+        if self.SOB_ENTRY.search(text):
+            self.found = True
+
+    def after(self):
+        if not self.found:
+            return ["{}:0: missing Signed-off-by in the header "
+                    "({}#_format_and_licensing_of_the_package_patches)"
+                    .format(self.filename, self.url_to_manual)]